Method of connecting springs



Patentecl Dec. 16, 1930 UNITED STATES -PATENTT OFFICE,

ANTHONY GEZR-LOWSKI, OF CHICAGO, ILIINOIS, ASSIG1 \TOR TO THE ROME COMPANY, INC., A CORPORATION OF NEW 'YORK METHOD OF CONNECTING SPRINGS k p Application filed July 29, 1929.. Serial No. 382,059.

In the common form of bed spring the ture of the helical Springs is a simple operation, requiring only the feeding of a wire through the machine and the automatic severing of the wire, after it has been shaped into helical form, to produce Springs of the proper length. The old practice is then to take up helical Springs and form loops, at the ends by inserting one end and then the other into suitable forming mechanism. The springs are then applied, by a separate manual operation, to the vertical Springs in a spring cushion.

The Object of the present invention is to make it possible to dispense with the two operations involving the inserting of -first one end of a spring, and then the other, into loop forming mechanism, and produce closed loops in the finished cushion without resorting to additional operations that are as costly as those which are eliminated. Or, if viewed in another of its aspects, the present invention may be said to have for its Object to make it possible to connect the crossed helical Springs to the wires of the vertical springs of a spring cushion by means of closed eyes or loops in such a manner that the cost of producing the structure as a Whole will be less than has heretofore been the case for Similar constructions.

The various features of novelty whereby my invention is characterized will hereinafter be pointed out with particularity in the claim; but, for a full understanding of my invention and of its objects and advantages, reference may be had to the following detailed description taken in connection with the accompanying drawing, wherein:

F igs. 1 and 2 are respectively a side elevation and an end view of one of the small helical springs adapted to form part of a bed spring; Fig. 3 is a top plan view of a fragment of the upper coil of one of the large vertical Springs and the helical spring engaged therewith as a preliminary step to the forming of the eye or loop; Fig. 4 is an end or side view looking at the lefthand end of the part shown in Fig. 3, from the left; and Figs. 5 and 6 are Views Similar to Figs. 3 and 4:, respectively, showing the completion of the loop or eye.

Referring to 'the drawing, '1 represents the wire of the upper turn or coil of one of the large vertical Springs of a bed spring, and 2 is one of the small helical Springs employed for tying together the large vertical Springs. The helical spring is simply a plain helix whose end sections (of which only one is shown), are simply plain helical portions, indicated at 3, without being distorted or deformed. Consequently these 'Springs may be made ina simple machine that automatically severs the wire whenever a predetermined number of coils have been made.

The helical spring is screwed upon the wire 1; being turned about its long aXis through a comparatively small angle, only, thereby carrying the free end past the outer side of the wire l'and a short distance beyondthe same as indicatedin Fig. 4. If now a suitable clamping tool is applied, tending to p-ress the end 3 down, as viewed in Fig. 4:, and at the same time press up on the wire of spring 2 approximately degrees removed from the: free end, the end section of the helical spring will be transformed into a loop-or eye 4:. If, at the same time the wire is pressed to form aloop or eye, a slight twist is given, the loop or eye will be caused to extend more or less in the direotion of the length of the helical spring. The result is that the helical spring is fastened to the wire 1 by means of a closed loop that will prevent accidental separation.

Any suitable means, pl'ers, for example, may be employed to form and set the eyes. I have found that pliers, forked to straddle the wire of the Vertical spring while the pliers are closing on the endmost half turn of the helical spring will give good results.

By my improved method I am enabled to dispense with the operations of preformmg eyes on the helical Springs, taking the Springs directly from the helix forming machine. Therefore, as it takes Very little time to form and set the eyes as the helical Springs are applied to the vertical Springs, a saving in cost is efected over the old practice of preforming the eyes. Furthermore, the eyes made according to my method are closed;

Whereas preformed eyes that can be engaged 10 With the vertical Springs must necessarily be open, and must afterwards be closed if accidental separation of the helical springs from the vertical Springs is to be guarded against.

15 \While I have illustrated and described With particularity only a single preferred form of my invention, I do not desire to be limited to the exact structural details thus illustrated and described; but intend to cover :z all forms and arrangements which come Within the deinitions of my invention constituting the appended claim.

I claim:

The method of making connection between the Wire of a` spring and a small helical spring, which consists in screwing the free helical end of a helical spring upon the Wire until said end passes a short distance beyond the Wire on the side on which the :au helical spring is located, and then pressing together the free end of the helical spring and the portion of the helical spring about 180 degrees distant therefrom to form a closed eye and twsting the eye to cause it to eX- ,-3 tend more or less in the direction of the spring.

In testimony whereof, I sign this specification.

ANTHONY GERLOVVSK. 

